- Explain why different models/representation are used to represent molecules and what information each representation can give. (1)
- Given a 3 dimensional molecular structure, generate the full range of 2-dimensional representations (e.g., electrostatic potential maps, space filling models, ball and stick models, perspective formulae, and Lewis structures ).
- Draw Lewis structures of various molecules given a molecular formula; draw the structural isomers, if any, implied by a particular molecular formula.
- When given two (or more) representations of a compound, identify which are the same and which are different.
- Explain why rotation is possible around single (sigma) bonds, but not around pi bonds and how this affects molecular properties. Identify bonds in molecules that can rotate and those that can’t..
- Use Lewis structures to deduce electron pair geometry, molecular shape and the hybridization state of an atom in a molecule.
- Predict polarity of molecules using bond polarity and molecular shape.
Identify molecules that can participate in hydrogen bonding, explain what structural features are involved.
- Use intermolecular forces to explain physical properties of molecular compounds. Predict/rank relative melting and boiling points of given compounds
- Explain the difference between covalent and ionic bonding
- Predict the type of bond found between various atoms.
- Describe the structure of ionic compounds and use it to explain their properties, such as high mp and bp, hard, brittle.
- Explain why metals tend to form positive ions and non-metals tend to form negative ions. Predict the charge for common ions.